Brush-boring machine.



. P. MEYER.

BRUSH BORING MAGHINE. APPLICATION FILED (11111.28, 1911.

Patented Sept. 19, 1911.

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P. MEYER.

BRUSH BORING MACHINE.

APPLIOATION FILED JAN. 28, 1911.

1,003,486. Patented Sept. 19,1911.

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-P. MEYER.

BRUSH BORING MACHINE.

Patented Sept. 19,1911.

APPLICATION FILED JAN. 28, 1911.

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PETER MEYER, 0F NEWARK, NEW JERSEY, ASSIGNOR T0 AMERICAN OIL & SUPPLY00., OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

BRUSH-BORING MACHINE.

ooaase.

To all whom it may concern:

Be it known that I, PETER MEYER, acitizen of the United States, and aresident of Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Brush-Boring Machines,of which the following is a specification.

In the making of jewelers brushes, the core or body of the brush isusually in the formof a circular block of wood which is drilled aroundits circumference to receive the tufts of bristles which form the brushproper. These holes in the brush block are usually made with a drill,the operations of positioning the block for the separate holes andfeeding the drill into the block or vice versa, being accomplished bymanually operated means. This makes the process a comparatively slowone, and also expensive, since the attention of an operator isconstantly demanded.

It is the object of my invention to overcome all these variousobjections and to ac-- complish the drilling of the brush blocks whollyautomatically.

To these ends my invention consists in its preferred form of a drill anda work holder, together wit-h automatic means for intermittently turningthe work holder to present new faces of the work to the drill, and meansfor automatically advancing the drill toward the work in the periods ofrest between the intermittent turning movements of the work holder. Thespecific means for performing these operations may vary but in apreferred form they consist of a cam shaft with a pair of cams thereon,connections from one of the cams for intermittently advancing the drill,and a pawl and ratchet device operated by connections from the other camfor intermittently turning the work holder.

Another feature of my invention resides in means for adjusting the workholder to regulate the angle or inclination of the holes to be bored andalso the position of such holes on the work.

Various other objects and features of my invention will appear as thespecification proceeds.

In the accompanying drawings I have illustrated several preferredembodiments Specification of Letters Patent. Patented Sept 19, 1911.Application filed January 28, 1911.

Serial No. 605,202.

of my invention but I would have it understood that various changes andmodifications may be made therein without departing from the spirit andscope of the invention and I would also have it understood that theinvention as a whole and the various features thereof may be employedwherever found useful and practical.

In the drawings: Figure 1 is a front elevation of a machine embodying myinven tion. Fig. 2 is a like view of the opposite side of the machine.Fig. 3 is an end View of the machine looking in the direction of thearrow in Fig. 2. Fig. 41 is a sectional view taken on the line 14: ofFig. 1. Fig. 5 is a sectional View taken on the line 5-5 of Fig. 1. Fig.6 is a longitudinal sectional view of the pulley on the drill spindle toillustrate the fastening means therefor. Fig. 7 is a transversesectional view of the same.

Like reference characters refer to like parts throughout the severalviews.

In the form of my invention which I have illustrated, the drill 1 iscarried in a chuck o-r suitable holder 2 on the drill spindle 8, and thework or block 4 is carried by a suitable work-holder such as the spindle5. The work-holder spindle 5 is preferably formed with a reduced portion6 for frictional engagement with the bore 7 of the block. And for thepurpose of properly holding the work in position upon the spindle, Iprefer to use a clamping device such as the plate 8 adapted to have abearing upon the top of the block, as shown, this clamping plate beingcarried by an arm 9. This arm is preferably pivoted at 10 in a post 11to permit of its being swung up out of the way when a new block is beingplaced upon the spindle. A spring 12 is preferably employed forautomatically holding the clamping plate in yielding engagement with thework. And the clamping plate has a swivel or universal connection 13upon the end of the arm 9 to permit of its adjusting itself upon the topof the work. This swivel connection may be made between the end of anadjustable pin 14 carried in the arm and the clamping plate. The spring12 permits the clamp to adjust itself to various lengths or blocks, andto permit of an even greater adjustment the post 11 is preferablyadjustably secured at 15 in the end of an arm 16 projecting in avertical direction with respect'to the drill. To accomplish thisadjustment the bracket 17 is preferably carried in a member 21 which isadjustable in the guide-ways 22 on the base or support, and is held inadjusted position by means of a clamping I nut 23.

As it is sometimes desirable to bore the holes at a slant instead of atright angles, I have so mounted the work-holder that it is adapted forthis adjustment also. This I have done by providing the bracket 17 witha journal or hub extension 24 journaled in the sleeve portion 25 of themember 21. For the purpose of clamping the bracket in adjusted relation,the sleeve portion 25 may be simply in the form of a split sleeve, asshown, which, by means of a clamping screw 26, serves to clamp thebracket 17 in adj usted position.

The means for automatically turning the work-holder may vary, but, asshown in the present instance, they consist of intermeshing bevel gears27 and 28 on the work-holding spindle and angularly disposed shaft 29respectively, together with a ratchet 30 on the end of shaft 29, a pawl31 carried by an arm 32 for engagement with the ratchet, and connectionsfrom a cam to be described. The shaft 29 is journaled in the hub portionof the bracket 17 so as not to interfere with the rotat-ive adjustmentof said bracket.

The cam for turning the work-holder is indicated at 33, this cam beingcarried by a cam shaft 34 which is suitably journaled as by beingcarried in a journal bracket 35 on the end of the drill head; Theconnections til from the said cam to the pawl and ratchet device consistin the present instance of a connecting rod 36 slidably engaged over thecam shaft and carrying a cam roll 37 for engagement with the cam, arocking lever 38 to which the rod 36 is pivoted and a link 39 nivotallyconnected between the other end of the rocking lever and the arm 32which carries the pawl. For the purpose of regulating the stroke of thepawl, this chain of connections is preferably made adjustable in someway, as by means of the slotted connection 40 between the rocking leverand the link 39. The cam shaft is of course driven by suitable means,such as a pulley 41.

In the present case the means for intermittently advancing the drillconsists of a pivoted rocker arm 42 carrying a cam roll 43 at one endfor engagement with an additional cam 44 in the cam shaft, and having abearing at its opposite or upper end upon the end of the drill spindle.To reduce friction between the end of the drill spindle and the rockerarm, either the spindle or the arm, or both, may be provided with a ball45 or like thrust bearing. The rocker arln thus imparts the inward orfeeding movement to the drill, and a spring 46 may be utilized foraccomplishing the return movement of the drill, the spring for thispurpose being preferably coiled upon the proj ecting end of the drillspindle and confined between a shoulder 47 on the end of the spindle,and a washer 48, which washer may and preferably is a ball-containedthrust hearing.

A pulley 49 or like driving element imparts the necessary rotativemovement to the drill spindle, and this pulley is so secured upon thedrill spindle as to permit of the in and out reciprocating movement ofthe spindle. To allow for this, I have devised anovel form of fastening,consisting of a key-pin 50 working in a keyway 51 on the interior of thepulley. This key-pin is placed by bringing the opening 52 in the pulleyinto alinement with a hole in the drill spindle. When the pin is soinserted, the pulley or the spindle is shifted so as to bring theopenings out of register, the keypin then sliding into the key-wayprovided for the same. The key-way extends longitudinally of the pulleyfrom the transverse opening therein. The normal reciprocating movementof the spindle is insufficient to bring the openings in the spindle andpulley into register so that the key will slide in the key-way and beheld therein.

In the operation of the machine, the parts are so timed that the drillwill be fed forward to engage the work during the periods of restbetween the intermittent turning movements of the work-holder. Theratchet disks are made interchangeable so that any number of openingsmay be bored in the blocks. The various other parts of the machine areadjustable so that blocks of different sizes and shapes may be bored andthe holes may be bored at any desired angle or in any desired relation.

As it is, for various reasons, sometimes desirable to change thework-holding spindle, the spindle may be provided with a removablemandrel 53, as best shown in Fig. 4. To facilitate the removal of thismandrel, the screw 54 may be engaged in the end of the spindle, thisscrew acting when turned to expel the mandrel frOm its socket in thespindle. In order to prevent any backward or retrograde movement of theratchet, a

holding device of some sort may be em- 1'? ployed, such as the spring55, which has a bearing upon the ratchet and acts as a brake to hold itagainst any backward movement.

What is claimed, is:

1. In a boring machine, a drill, a support longitudinally adjustabletoward and away from the drill, a member adjustable vertically on saidsupport and provided with a sleeve extending transversely to the axis ofthe drill, a bracket having a hub extension j ournaled in the sleeve andcircumferentially adjustable therein toward and away from the drill, arotatable work holder carried in the bracket at right angles to the axesof the drill and hub extension, a shaft extending through the hubextension concentric with the center of its circumferential adjustment,intermeshing gears between the shaft and work holder, a ratchet on theend of the shaft, a pawl adapted to engage with aid ratchet and looselymounted on the hub extension so as to permit independent adjustment ofthe bracket both longitudinally, vertically and circumferentially,actuating means for said pawl, and adjustable con nections between theactuating means and paw].

2. In a boring machine, a drill, a support longitudinally adjustabletoward and away from the drill, a member adjustable vertically on saidsupport and provided with a sleeve extending transversely to the axis ofthe drill, a bracket having a hub extension journaled in the sleeve andcircumferentially adjustable therein toward and away from the drill, arotatable work holder carried in the bracket at right angles .to theaxes of the drill and hub extension, a shaft extending through the hubextension concentric with the center of its circumferential adjustment,intermeshing gears between the shaft and work holder, and means forintermittently turning the shaft.

3. In a boring machine, a drill, a support longitudinally adjustabletoward and away from the drill, a member adjustable vertically on saidsupport and provided with a sleeve extending transversely to the axis ofthe drill, a bracket having a hub extension journaled in the sleeve andcircumferentially adjustable therein toward and away from the drill, arotatable work holder carried in the bracket at right angles to the axesof the drill and hub extension, a shaft extending through the hubextension concentric with the center of its circumferential adjustment,intermeshing gears between the shaft and work holder, means forintermittently turning the shaft, a work clamp car ried by theadjustable bracket, and means for adjusting said work clamp with respectto the work on the work holder independently of the adjustment of thebracket.

4c. In a drilling machine, a support, a bracket having a hub portionjournaled in the support, means for securing the bracket in adjustedposition, a shaft journaled in the hub portion of the bracket, aworkholding spindle ournaled in the bracket, intermeshing gears on theshaft and spindle, a ratchet on the outer end of the shaft, a pawl forengagement with said ratchet, means for actuating the pawl so thatthrough the connections described the work will be intermittentlyrotated, a drill, and means for intermittently advancing said drilltoward the work.

5. In a drilling machine, a support, a bracket having a hub portionjournaled in the support, means for securing the bracket in adjustedposition, a shaft journaled in the hub portion of the bracket, aworkholding spindle journaled in the bracket, intern'zeshing gears onthe shaft and spindle, a ratchet on the outer end of the shaft, a pawlfor engagement with said ratchet, a

,cam, connections from said cam to the pawl for actuating the same tointermittently rotate the ratchet, a drill, a second cam, and

connections from said second cam for intermittently advancing the drilltoward the work.

6. In a machine for boring brush blocks, a drill, a support adjustabletoward and away from the drill, a bracket adjustable vertically on thesupport, said bracket also having a circumferential adjustment withrespect to the drill, a work-holding spindle journaled in the bracket,means for intermittently turning the spindle, and means forintermittently advancing the drill toward the spindle.

7. In a machine of the character set forth, a support, a bracketrotatably adjustable on said support, a work-holding spindle rotatablymounted in said bracket, a shaft extending through the support andbracket concentric with the center of adjustment of the bracket, gearson the shaft and workholding spindle adapted to intermesh in anyadjusted position of the bracket, and means for rotating the shaft.

8. In combination, a support, a bracket revolubly mounted on saidsupport, means for securing the bracket in adjusted position upon thesupport, a work-holding spindle journaled in the bracket, a' shaftjournaled in the bracket concentric with its axis of revolution and atan angle to the spindle, intermeshing gears on the shaft and spindle,means for intermittently rotating the shaft, and a drill operativelyrelated to the work on the spindle.

9. In a drilling machine, a support, a bracket having a hub portionjournaled in the support, means for securing the bracket in adjustedposition, a shaft journaled in the hub portion of the bracket, awork-holding spindle journaled in the bracket, intermeshing gears on theshaft and spindle, a

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ratchet on the outer end of the shaft, a pawl for engagement with saidratchet, means for actuating the pawl so that through the connectionsdescribed the work will be intermittently rotated, and a drilloperatively related to the work carried by the spindle.

10. In a boring machine, a drill, a support, a member adjustablevertically on said support and provided with a sleeve extendingtransversely to the axis of the drill, a bracket having a hub extensionj ournaled in the sleeve and circumferentially adjustable therein towardand away from the drill, a rotatable work holder carried in the bracketat right angles to the axes of the drill and hub extension, a shaftextending through the hub extension concentric with the center of itscircumferential adjustment, intermeshing gears between the shaft andwork holder, and means for intermittent-1y turning the shaft.

11. In a machine of the character set forth, a support, a bracketrotatably adjustable on said support, a work-holding spindle rotatablymounted in said bracket, an adjustable clamp carried by the bracket forholding the work upon the spindle, a shaft extending through the supportand bracket concentric with the center of adjustment of the bracket,gears on the shaft and workholding spindle adapted to interinesh in anyadjustedposition of the bracket, means for rotating the shaft, and adrill operatively related to the work on the spindle.

Signed at Newark in the county of Essex and State of New Jersey thistwenty-fifth day of January A. D. 1911.

PETER MEYER.

lVitnesses JEROME T. CONGLETON, JOHN A. MATTHEWS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

